In what city was 'I Love Lucy' primarily set?

I Love Lucy was primarily set in New York City. The series follows Lucy Ricardo and her bandleader husband, Ricky, as they live in a Manhattan apartment building with their friends and landlords, Fred and Ethel Mertz.

The New York setting is central to the show’s premise. Ricky performs at the fictional Tropicana nightclub, while Lucy tries to enter show business despite being a housewife. The city provides opportunities for plots involving auditions, celebrity guests, restaurants, clubs, hotels, and travel departures. The Ricardos’ apartment and the Mertzes’ nearby home form the show’s main comic stage.

The characters later travel widely, including trips to Hollywood, Europe, and other parts of the United States. Those episodes can make the series feel less tied to New York, but the original domestic setup remains firmly metropolitan New York. The fictional apartment address, 623 East 68th Street, became one of the show’s most recognizable bits of imaginary geography.